Achievement leak reveals new campaign details, but beware of HUGE STORY SPOILERS.

The full list, acquired by X360a.org and posted below, reveals that achievements can be earned in both the game's campaign and multiplayer mode, with 120G reserved for multiplayer.

There are MASSIVE STORY SPOILERS contained within the list, but if you still want to take a look we've divided it into spoilers and non-spoilers.

SPOILER FREE:

Storm bringer – 25G: Obtain 20 000 points in the Singapore mission in the CampaignA one-man riot – 25G: Obtain 11 000 points in the Shanghai mission in the CampaignTerror of the deep – 25G: Obtain 11 000 points in the South China Sea mission in the CampaignGladiator – 25G: Obtain 12 000 points in the Kunlun Mountains mission in the CampaignAbove and beyond the call – 25G: Complete all Assignments in the CampaignDemolition man – 25G: Obtain 15 000 points in the Tashgar mission in the CampaignGuardian of the fleet – 25G: Obtain 6 000 points in the Suez mission in the CampaignFull arsenal – 65G: Unlock all assignments and collectibles in the CampaignFish – 20G: Complete the Campaign on EasyDunn’s pride – 25G: Obtain 7 000 points in the Baku mission in the CampaignBraving the storm – 20G: Complete the Singapore mission in the CampaignWolves in sheep’s clothing – 20G: Complete the Shanghai mission in the CampaignThe fall of a Titan – 20G: Complete the South China Sea mission in the CampaignDead by dawn – 20G: Complete the Kunlun Mountains mission in the CampaignGuns at dawn – 20G: Complete the Suez mission in the CampaignFishing in Baku – 20G: Complete the Baku mission in the CampaignAntediluvian – 20G: Complete the Tashgar mission in the CampaignIt was on the way... – 20G: Find 6 collectibles in the CampaignTook a casual look around – 20G: Find 9 collectibles in the CampaignMethodical search – 20G: Find 15 collectibles in the CampaignDone some searching – 20G: Find 12 collectibles in the CampaignNo stone left unturned – 20G: Find 18 collectibles in the CampaignEvery nook and cranny – 20G: Find 21 collectibles in the CampaignStumbled over it – 20G: Find 3 collectibles in the CampaignWolf – 25G: Complete the Campaign on NormalTombstone – 25G: Complete the Campaign on HardRecon – 65G: Find 28 collectibles in the CampaignWell placed – 20G: Get 10 kills with C4 in the Baku mission in the CampaignWrecker – 20G: Get 10 multi-kills in the Shanghai mission in the CampaignBlood wake – 20G: Get 30 headshots in the South China Sea mission in the CampaignWar turtle – 20G: Get 15 kills with RPG in the Singapore mission in the CampaignInfiltrator – 20G: Get 10 adrenaline kills in the Tashgar mission in the CampaignShawshank – 20G: Get 5 kills with Shank in the Kunlun Mountains mission in the CampaignTurn around... – 10G: Perform 5 dog tag kills in MultiplayerWon them all – 10G: Win a round of each game mode.45 old school – 25G: Perform 45 kills with the M1911 Handgun in MultiplayerBomb squad – 25G: Deliver 5 bombs in ObliterationCall me "Sir" – 50G: Reach rank 25.

SPOILERS:

For tombstone – 20G: Let the Valkyrie be destroyed in the CampaignFor the people – 20G: Sacrifice Irish to save the Valkyrie in the Campaign (1)For the cause – 20G: Sacrifice Hannah to save the Valkyrie in the CampaignPatience is a virtue – 20G: Experience all 3 endings in the Campaign